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desmids
desmids A group of green algae (division Chlorophyta) which are basically unicellular but have two distinct halves, or ‘semicells’. The cells are usually solitary but in a few species they may form irregular or filamentous colonies. The cells may vary in shape within a single species, making identification and classification difficult. Sexual reproduction occurs by conjugation, similar to that in Spirogyra. They are found mainly in freshwater habitats and are usually indicators of clean (unpolluted) water.
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MICHAEL ALLABY. "desmids." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "desmids." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O7-desmids.html MICHAEL ALLABY. "desmids." A Dictionary of Plant Sciences. 1998. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-desmids.html |
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desmids
desmids Unicellular green algae of the class Desmidioideae. Like Spirogyra, they have an elaborate chloroplast. The cells of desmids are characteristically split into two halves joined by a narrow neck, each half being a mirror image of the other. The outer wall of the cell is patterned with various protuberances and covered with a mucilaginous sheath, which is thought to play a role in the cell's slow gliding movement. Desmids are found mainly in fresh water.
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"desmids." A Dictionary of Biology. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "desmids." A Dictionary of Biology. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O6-desmids.html "desmids." A Dictionary of Biology. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-desmids.html |
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desmid
desmid a protist of the class Charophyceae (see Chlorophyta ). |
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"desmid." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "desmid." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-IX-desmid.html "desmid." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-IX-desmid.html |
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desmid
desmid
•carangid • alleged • aged
•frigid, rigid
•turgid • naked • wicked • whizz-kid
•orchid • crooked
•pallid, valid
•gelid • skidlid • eyelid
•solid, squalid, stolid
•Euclid • unsullied • annelid
•chrysalid • Ozalid • desmid • timid
•Fatimid
•humid, tumid
•pyramid • MacDiarmid • crannied
•arachnid • Enid • hominid • honied
•Leonid, Oceanid
•salmonid • Achaemenid
•unaccompanied • Sassanid • learned
•winged
•rapid, sapid, vapid
•intrepid, tepid
•insipid, lipid
•limpid • poppied • torpid
•Cupid, stupid
•canopied
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"desmid." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "desmid." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O233-desmid.html "desmid." Oxford Dictionary of Rhymes. 2007. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-desmid.html |
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